Rapid lead device for circuit breaker test

Abstract

The invention discloses a quick lead device for a circuit breaker test, and the device comprises a splicing type insulating rod which is provided with a connecting block at the upper end; the wire clamp assembly is detachably connected to one side of the connecting block, and the lower end of the wire clamp assembly is provided with a lead wire for an experiment; the wire clamp assembly comprises a first adjusting part and a second adjusting part, the second adjusting part is arranged on one side of the first adjusting part and rotationally connected with the first adjusting part, and a torsional spring is arranged between the first adjusting part and the second adjusting part; through the first clamping section, the first inclined plane, the second clamping section, the second inclined plane and the plane, the risk that after a traditional cable clamp is connected with a cable, the cable is loosened and falls off due to loose clamping is avoided, the position of the cable can be well locked after clamping, the situation that the cable falls off from the cable clamp is greatly reduced, and the service life of the cable is prolonged. By arranging a threaded column, a threaded groove and a spiral groove, the problem that the length of an insulating rod of a traditional hanging wire clamp is fixed and is inconvenient to adjust according to actual needs is avoided.

Description

Technical Field

[0001] This invention specifically relates to a fast lead-out device for circuit breaker testing. Background Technology

[0002] Circuit breakers are crucial switching devices in power systems, undertaking the critical tasks of closing, carrying, and interrupting normal and fault currents. To ensure their operational reliability, regular power outage maintenance and testing are required, such as loop resistance testing, insulation resistance testing, and switch characteristic testing. When testing circuit breakers of 35kV and above, it is usually necessary to connect the testing instruments to the high-voltage terminals of the circuit breaker via lead wires. Because these terminals are located at height, maintenance personnel must work at height or on tiptoe on insulated stools to install and remove the lead clamps.

[0003] When testing and wiring circuit breakers, maintenance personnel need to climb to high places to make the connections, which not only poses a risk of falling, but also takes a lot of time to move up and down, resulting in excessively long power outage maintenance time. In addition, the lead wire clamps used in traditional applications mostly adopt spiral clamping or simple spring clamping structures. After connection, due to the weight of the cable itself, external vibration, or accidental pulling of the insulating rod, they are prone to loosening or even falling off, resulting in unreliable wiring. To address this, we propose a rapid lead wire device for circuit breaker testing. Summary of the Invention

[0004] The purpose of this invention is to provide a fast lead-out device for circuit breaker testing to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fast lead-out device for circuit breaker testing, comprising:

[0006] A splicing insulating rod, wherein a connecting block is provided at the upper end of the splicing insulating rod;

[0007] A wire clamp assembly is detachably connected to one side of the connecting block, and the lower end of the wire clamp assembly is provided with a lead wire for testing.

[0008] The wire clamp assembly includes:

[0009] First regulating section;

[0010] The second adjustment part is disposed on one side of the first adjustment part to be rotatably connected to it, and a torsion spring is provided between the two;

[0011] The first clamping section is fixed to the first adjusting part, and a first clamping groove is provided on one side of the first clamping section, and the top of the inner side of the first clamping groove has a first inclined surface;

[0012] The second clamping section is fixed to the second adjusting part, and one side of the second clamping section has a second clamping groove corresponding to the first clamping groove. The top edge of the inner side of the second clamping groove is provided with a second inclined surface, and the middle of the top edge of the inner side of the second clamping groove has a plane for limiting the position.

[0013] Preferably, a permanent magnet is provided on one side of the first adjustment part, and a prism block is fixed on one side of the permanent magnet, and the connecting block has a groove that cooperates with the prism block.

[0014] Preferably, the outer edge of the prism block is hexagonal.

[0015] Preferably, the top end of the second clamping section has a third inclined surface facing the first clamping section.

[0016] Preferably, the first clamping section is provided in two parallel locations along the short side of the first adjusting part, a fixing block is provided between the two first clamping sections, and a conductive spring is provided on one side of the fixing block.

[0017] Preferably, the conductive spring is arc-shaped, and there is a reserved cavity between the conductive spring and the fixing block.

[0018] Preferably, the spliced ​​insulating rod includes a rod body, at least two rod bodies are provided along its axial direction, and one end of the rod body has a threaded groove, and the other end has a threaded post that mates with the threaded groove.

[0019] Preferably, the outer wall of the rod is provided with a spiral groove along its axial direction.

[0020] Preferably, the lower end of the spliced ​​insulating rod is detachably connected to a handle, and the upper end of the outer wall of the handle is provided with an umbrella skirt.

[0021] Preferably, one side of the second clamping groove has an outwardly protruding extension.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] (1) The present invention avoids the risk of loosening and falling off after the connection of the cable to the circuit breaker by the first clamping section, the first inclined surface, the second clamping section, the second inclined surface and the plane. The present invention can lock the position of the cable after clamping, greatly reducing the cable from falling off the clamp, ensuring the stable connection between the clamp and the cable, and making it easy to maintain the stability of the wiring during maintenance.

[0024] (2) By setting permanent magnets, prisms and grooves, the traditional insulating rod and wire clamp are fixed structures. After the wire clamp is connected to the cable, the insulating rod hangs on the cable, which means that one insulating rod can only operate one wire clamp to cooperate with the cable. Moreover, the weight of the insulating rod is on the cable for a long time. This device has a separable design, which makes it easy to operate multiple wire clamps to cooperate with the cable through one insulating rod. This reduces the risk of the wire clamp detaching from the cable under the action of gravity, or the weight of the insulating rod being on the cable for a long time.

[0025] (3) By setting threaded columns, threaded grooves and spiral grooves, the traditional hanging clamps with fixed insulation rod lengths are avoided. The length is not easy to adjust according to actual needs, and the fixed length insulation rods are not easy to store and carry. This device is convenient to connect and adjust the length according to actual conditions, and can effectively prevent rainwater from flowing along the insulation rod body during use, reduce the risk of electrical conductivity, and ensure good insulation effect. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the mating structure of the wire clamp assembly and the connecting block of the present invention;

[0028] Figure 3 This is a schematic diagram of the wire clamp assembly structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the first clamping section structure of the present invention;

[0030] Figure 5 This is a schematic diagram of the second clamping section structure of the present invention;

[0031] Figure 6 This is a schematic cross-sectional view of the conductive spring sheet structure of the present invention;

[0032] Figure 7 This is a schematic diagram of the planar structure of the inner side of the second clamping groove of the present invention;

[0033] Figure 8 This is a schematic diagram of the splicing insulating rod structure of the present invention.

[0034] In the diagram: 1. Interlocking insulating rod; 101. Rod body; 102. Threaded groove; 103. Threaded post; 104. Spiral groove; 2. Connecting block; 3. Wire clamp assembly; 31. First adjusting part; 32. Second adjusting part; 33. Torsion spring; 34. Permanent magnet; 35. Prism block; 36. First clamping section; 37. First inclined surface; 38. Second clamping section; 39. Second clamping groove; 310. Second inclined surface; 311. Extension section; 312. Third inclined surface; 313. Fixing block; 314. Conductive spring; 315. Plane; 4. Lead wire; 5. Prism groove; 6. Handle; 7. Umbrella skirt. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-8 The present invention provides a technical solution: a fast lead-in device for circuit breaker testing, comprising:

[0037] A spliced ​​insulating rod 1, with a connecting block 2 at the upper end;

[0038] It facilitates the quick connection of cables at high locations via the spliced ​​insulating rod 1, avoiding the inconvenience of manually climbing to high places to make connections and saving inspection and maintenance time;

[0039] The wire clamp assembly 3 is detachably connected to one side of the connecting block 2, and the lower end of the wire clamp assembly 3 is provided with a lead wire 4 for testing.

[0040] This allows for quick connection of the lead wire 4 to a high-level cable via the wire clamp assembly 3, thus facilitating wiring.

[0041] The wire clamp assembly 3 includes:

[0042] First adjustment section 31;

[0043] The second adjustment part 32 is disposed on one side of the first adjustment part 31 for rotatable connection thereto, and a torsion spring 33 is provided between the two;

[0044] The first clamping section 36 is fixed on the first adjusting part 31, and a first clamping groove is provided on one side of the first clamping section 36, and the top of the inner side of the first clamping groove has a first inclined surface 37.

[0045] The second clamping section 38 is fixed on the second adjusting part 32, and one side of the second clamping section 38 has a second clamping groove 39 corresponding to the first clamping groove. The top edge of the inner side of the second clamping groove 39 is provided with a second inclined surface 310, and the middle of the top edge of the inner side of the second clamping groove 39 has a plane 315 for limiting the position.

[0046] The automatic clamping mechanism driven by the torsion spring 33, in conjunction with the unique first inclined surface 37, second inclined surface 310 and limiting plane 315, achieves "easy entry, tight clamping and anti-loosening" of the wire clamp. It not only solves the safety hazard of traditional wire clamps being easy to loosen, but also ensures smooth operation. Clamping and releasing can be completed with one hand, which greatly improves the reliability and efficiency of wiring operations.

[0047] Preferably, a permanent magnet 34 is provided on one side of the first adjustment part 31, and a prism block 35 is fixed on one side of the permanent magnet 34, and the connecting block 2 has a prism groove 5 that cooperates with the prism block 35.

[0048] The permanent magnet 34 facilitates the quick magnetic attraction between the first adjustment part 31 of the wire clamp and the connecting block 2 to achieve connection, thereby making the prism block 35 stably located inside the prism groove 5. This enables a quick, stable, and non-rotational connection between the insulating rod and the wire clamp, allowing for the rapid switching and operation of multiple wire clamps through a single insulating rod. This significantly improves work efficiency and completely avoids the risk of loosening of connection points or equipment damage caused by the long-term suspension of the insulating rod on the cable due to its own weight.

[0049] Preferably, the outer edge of the edge block 35 is hexagonal;

[0050] This better prevents rotation between the connecting block 2 and the wire clamp.

[0051] Preferably, the top end of the second clamping section 38 has a third inclined surface 312 facing the first clamping section 36;

[0052] This facilitates better insertion of the cable between the first clamping section 36 and the second clamping section 38 for clamping when the cable is connected to the online clamp.

[0053] Preferably, two first clamping sections 36 are arranged side by side along the short side of the first adjusting part 31, and a fixing block 313 is provided between the two first clamping sections 36, and a conductive spring piece 314 is provided on one side of the fixing block 313; the conductive spring piece 314 is arc-shaped, and there is a reserved cavity between the conductive spring piece 314 and the fixing block 313.

[0054] It facilitates connection to high-voltage cables via conductive spring 314, provides excellent electrical contact performance, effectively compensates for the effects of machining tolerances and oxide layers, ensures minimal resistance in the test circuit, and thus guarantees the authenticity and accuracy of high-voltage test data.

[0055] Preferably, the spliced ​​insulating rod 1 includes a rod body 101, at least two rod bodies 101 are provided along its axial direction, and one end of the rod body 101 has a threaded groove 102, and the other end has a threaded post 103 that cooperates with the threaded groove 102;

[0056] It is convenient to splice poles 101 of different lengths according to actual needs, so as to match the wire clamp with the circuit breaker connection cables of different heights and realize rapid wire lead.

[0057] Preferably, the outer wall of the rod 101 is provided with a spiral groove 104 along its axial direction;

[0058] The spiral groove 104 facilitates the generation of centrifugal force to throw rainwater off the surface of the pole 101 as it flows along the surface, thereby reducing the water film formed on the surface of the pole 101 and affecting the insulation effect, and significantly improving the safety boundary of operation in humid, rainy and other adverse weather conditions.

[0059] Preferably, the lower end of the spliced ​​insulating rod 1 is detachably connected to a handle 6, and the upper end of the outer wall of the handle 6 is provided with an umbrella skirt 7;

[0060] This helps to better prevent rainwater from flowing along the pole 101 and coming into contact with the hand holding it.

[0061] Preferably, one side of the second clamping groove 39 has an outwardly protruding extension 311;

[0062] This facilitates better confinement of the cable connected to the circuit breaker between the first clamping slot and the second clamping slot 39, thereby achieving a stable wiring effect.

[0063] The working principle and usage process of this invention are as follows: In use, multiple rods 101 are joined together with threaded posts 103 and threaded grooves 102 to form a suitable length. After the operator stands on an insulated stool, he holds the rod 6 and moves the wire clamp assembly 3 at the upper end of the spliced ​​insulating rod 1 toward the cable. The cable slides into the space between the first clamping section 36 and the second clamping section 38 through the third inclined surface 312. Under the elastic force of the torsion spring 33, the first clamping groove and the second clamping groove 39 move closer to each other to clamp the cable and achieve wire connection. The plane 315 blocks the cable from accidentally coming off between the first clamping groove and the second clamping groove 39, ensuring a stable wiring effect. After the test, when it is necessary to remove the wire clamp, the operator only needs to pull the insulating rod downward and slightly tilted. The cable will press the first inclined surface 37 and the second inclined surface 310. These two inclined surfaces convert the axial tension into a torque that opens the first and second clamping sections, thereby automatically releasing the wire clamp and allowing the cable to easily come off.

[0064] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fast lead-in device for circuit breaker testing, characterized in that, include: A splicing insulating rod (1) is provided with a connecting block (2) at its upper end. The wire clamp assembly (3) is detachably connected to one side of the connecting block (2), and the lower end of the wire clamp assembly (3) is provided with a lead wire (4) for experimentation. The wire clamp assembly (3) includes: First adjustment section (31); The second adjustment part (32) is disposed on one side of the first adjustment part (31) for rotational connection thereto, and a torsion spring (33) is provided between the two. The first clamping section (36) is fixed on the first adjusting part (31), and a first clamping groove is provided on one side of the first clamping section (36), and the top of the inner side of the first clamping groove has a first inclined surface (37). The second clamping section (38) is fixed on the second adjusting part (32), and the second clamping section (38) has a second clamping groove (39) on one side corresponding to the first clamping groove. The second clamping groove (39) has a second inclined surface (310) at the inner top edge, and a plane (315) for limiting the position at the inner top center.

2. The fast lead-out device for circuit breaker testing according to claim 1, characterized in that: A permanent magnet (34) is provided on one side of the first adjustment part (31), and a prism block (35) is fixed on one side of the permanent magnet (34). The connecting block (2) has a prism groove (5) that cooperates with the prism block (35).

3. The fast lead-out device for circuit breaker testing according to claim 2, characterized in that: The outer edge of the prism block (35) is hexagonal.

4. The fast lead-out device for circuit breaker testing according to claim 1, characterized in that: The top of the second clamping section (38) has a third inclined surface (312) facing the first clamping section (36).

5. The fast lead-out device for circuit breaker testing according to claim 1, characterized in that: The first clamping section (36) is arranged in two places along the short side of the first adjusting part (31), and a fixing block (313) is arranged between the two first clamping sections (36), and a conductive spring sheet (314) is arranged on one side of the fixing block (313).

6. The fast lead-out device for circuit breaker testing according to claim 5, characterized in that: The conductive spring (314) is arc-shaped, and there is a reserved cavity between the conductive spring (314) and the fixing block (313).

7. The fast lead-out device for circuit breaker testing according to claim 1, characterized in that: The spliced ​​insulating rod (1) includes a rod body (101), at least two rod bodies (101) are provided along its axial direction, and one end of the rod body (101) has a threaded groove (102) and the other end has a threaded post (103) that cooperates with the threaded groove (102).

8. The fast lead-out device for circuit breaker testing according to claim 7, characterized in that: The outer wall of the rod (101) is provided with a spiral groove (104) along its axial direction.

9. A fast lead-out device for circuit breaker testing according to claim 1, characterized in that: The lower end of the spliced ​​insulating rod (1) is detachably connected to a handle (6), and the upper end of the outer wall of the handle (6) is provided with an umbrella skirt (7).

10. A fast lead-out device for circuit breaker testing according to claim 1, characterized in that: The second clamping groove (39) has an outwardly protruding extension (311) on one side.

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